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11+21=8+7x+1
We move all terms to the left:
11+21-(8+7x+1)=0
We add all the numbers together, and all the variables
-(7x+9)+11+21=0
We add all the numbers together, and all the variables
-(7x+9)+32=0
We get rid of parentheses
-7x-9+32=0
We add all the numbers together, and all the variables
-7x+23=0
We move all terms containing x to the left, all other terms to the right
-7x=-23
x=-23/-7
x=3+2/7
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